Alright, I followed the very helpful tutorial, but I'm still experiencing a few problems. I have a perfect connection when I telnet into my SMTP and POP3 services both locally and remotely. But, the real problem begins when I try to authenticate into my account. I receive the following error after I try to login with a user "[email protected] I've read all of the threads on here about this issue, so I know to resolve this I need to send an email to this user account. I have to do this so it will create my account, before I can log into it through POP3. Well, I've tried sending myself an email using the following command locally: Code: echo welcome | mail [email protected] When I do that, I receive the following messages in my /var/log/maillog file. I've read all of the threads and I've looked through my Postfix .cf files for errors. I've made sure the my domain hostnames are correct. Can somebody please give me some ideas where to begin to pinpoint this issue? I don't know if my Postfix is successfully pulling the SQL data or not. Hope to hear something ASAP. Thanks!